Running The Engine

To be able to run Behave Graph, you need to have a graph in JSON format. You can create a graph using the Graph Editor or by writing it manually.

You will also need to configure the registry with the profiles you want to use. You can read more about profiles here.

Here’s an example code of how should look like:

import {
  DefaultLogger,
  Engine,
  readGraphFromJSON,
  registerCoreProfile,
  Registry,
  ManualLifecycleEventEmitter
} from '@kiberon-labs/behave-graph';

import myGraphJson from './myGraph.json';

/** Setup the Registry **/
const registry = new Registry();
const logger = new DefaultLogger();
const manualLifecycleEventEmitter = new ManualLifecycleEventEmitter();

registerCoreProfile(registry, logger, manualLifecycleEventEmitter);

/** Prepare the Graph **/
const graph = readGraphFromJSON(myGraphJson, registry);

/** Run the Graph **/
const engine = new Engine(graph);

/** Trigger events **/

if (manualLifecycleEventEmitter.startEvent.listenerCount > 0) {
  manualLifecycleEventEmitter.startEvent.emit();
  await engine.executeAllAsync(5);
}

if (manualLifecycleEventEmitter.tickEvent.listenerCount > 0) {
  const iterations = 20;
  const tickDuration = 0.01;
  for (let tick = 0; tick < iterations; tick++) {
    manualLifecycleEventEmitter.tickEvent.emit();
    engine.executeAllSync(tickDuration);
    await sleep(tickDuration);
  }
}

if (manualLifecycleEventEmitter.endEvent.listenerCount > 0) {
  manualLifecycleEventEmitter.endEvent.emit();
  await engine.executeAllAsync(5);
}